diff options
| -rw-r--r-- | OvmfPkg/PlatformPei/Platform.c | 45 | ||||
| -rw-r--r-- | OvmfPkg/PlatformPei/PlatformPei.inf | 1 |
2 files changed, 46 insertions, 0 deletions
diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c index 906f64615d..c9ec1d7e99 100644 --- a/OvmfPkg/PlatformPei/Platform.c +++ b/OvmfPkg/PlatformPei/Platform.c @@ -322,6 +322,50 @@ PciExBarInitialization ( }
VOID
+MicrovmInitialization (
+ VOID
+ )
+{
+ FIRMWARE_CONFIG_ITEM FdtItem;
+ UINTN FdtSize;
+ UINTN FdtPages;
+ EFI_STATUS Status;
+ UINT64 *FdtHobData;
+ VOID *NewBase;
+
+ Status = QemuFwCfgFindFile ("etc/fdt", &FdtItem, &FdtSize);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_INFO, "%a: no etc/fdt found in fw_cfg\n", __FUNCTION__));
+ return;
+ }
+
+ FdtPages = EFI_SIZE_TO_PAGES (FdtSize);
+ NewBase = AllocatePages (FdtPages);
+ if (NewBase == NULL) {
+ DEBUG ((DEBUG_INFO, "%a: AllocatePages failed\n", __FUNCTION__));
+ return;
+ }
+
+ QemuFwCfgSelectItem (FdtItem);
+ QemuFwCfgReadBytes (FdtSize, NewBase);
+
+ FdtHobData = BuildGuidHob (&gFdtHobGuid, sizeof (*FdtHobData));
+ if (FdtHobData == NULL) {
+ DEBUG ((DEBUG_INFO, "%a: BuildGuidHob failed\n", __FUNCTION__));
+ return;
+ }
+
+ DEBUG ((
+ DEBUG_INFO,
+ "%a: fdt at 0x%x (size %d)\n",
+ __FUNCTION__,
+ NewBase,
+ FdtSize
+ ));
+ *FdtHobData = (UINTN)NewBase;
+}
+
+VOID
MiscInitialization (
VOID
)
@@ -368,6 +412,7 @@ MiscInitialization ( break;
case 0xffff: /* microvm */
DEBUG ((DEBUG_INFO, "%a: microvm\n", __FUNCTION__));
+ MicrovmInitialization ();
PcdStatus = PcdSet16S (
PcdOvmfHostBridgePciDevId,
MICROVM_PSEUDO_DEVICE_ID
diff --git a/OvmfPkg/PlatformPei/PlatformPei.inf b/OvmfPkg/PlatformPei/PlatformPei.inf index 1c56ba2758..8ef404168c 100644 --- a/OvmfPkg/PlatformPei/PlatformPei.inf +++ b/OvmfPkg/PlatformPei/PlatformPei.inf @@ -44,6 +44,7 @@ [Guids]
gEfiMemoryTypeInformationGuid
+ gFdtHobGuid
[LibraryClasses]
BaseLib
|